Blower pipe support and removable elbow therefor



Se t. 7, 1937. T. H. OPPENHEIM 2,092,134 v MOVABLE ELBOW THEREFOR BLOWERPIPE SUPPORT AND BE Filed May 21, 1935 3 Sheets-Sheet l 7'. H.Upped/991mr D n E M WW &\

Sept. 7, 1937. T. H. OPPENHEIM 2,092,134

" BLOWER PIPE SUPPORT AND REMOVABLE ELBOW THEREFOR Filed May 21, 1935 3Sheets-Sheet 2 1 1937- T. H. OPPENHEIM 2,092,134

BLOWER PIPE SUPPORT AND REMOVABLE ELBOW THEREFOR Filed May 21, 1955 3Sheets-Sheet 3 X2 EQ. 13 v Patented Sept. 7, 1937 UNITED STATES PATENTOFFICE BLOvVER. PIPE SUPPORT AND REMOVABLE ELBOW THEREFOR ApplicationMay 21, 1935, Serial No. 22,662

9 Claims.

This invention relates to an improved blower pipe which has beenillustrated as an element of a husker shredder, but it is to beunderstood that the blower pipe may be used in connection with thrashingmachines or any other machine to which it may be applied.

The invention particularly relates to an improved means for connecting ablower pipe with the delivery pipe or spout of a blower forming part ofthe husker shredder or other machine, and more particularly relates to ablower pipe having an improved type of elbow connecting it with thedelivery pipe of the blower and improved means for mounting a boom poleor derrick by means of which the blower pipe is supported. a

In many kinds of husker shredders it is necessary'to use a boom pole orderrick for supporting the blower pipe but it has been found that whenthe derricks are mounted in accordance with present day practice thederrick and the blower pipe cannot have movement in a complete circleabout the delivery pipe and, therefore, it is often very difiicult todispose the blower pipe in the proper position after the machine hasbeen moved into place.

7 Therefore, another object of the invention is to provide improvedmeans for mounting the derrick about the delivery pipe of the husker andpermit the blower pipe and derrick to swing in a complete circle andthus allow the blower pipe to be very easily moved into a desiredposition.

Another object of the invention is to so construct and mount the derrickthat the blower pipe may be swung vertically from a substantiallyhorizontal position to a substantially vertical position and thus allowthe blower pipe to extend either vertically for delivering material intothe top of a silo or cause the material to be formed in a pile or stackin 'a loft or on the ground.

Another object of the invention is to so form the derrick that when themachine is to be stored in a barn or under a shed having a low roof, theblower pipe may be disposed longitudinally over the machine and thebraces for the derrick released so that the derrick itself may be movedto a substantially horizontal position and not interfere with movementof the machine into the barn or the shed.

Most of the blower pipe elbows now in use are subject to occasionelclogging, especially when long stover has to be forced through the pipesor when the speed of the exhauster or blower is suddenly reduced, saydue to the slippage of the blower belt or stalling of the tractor and onsuch occasions the entire blower pipe and especially the elbow is apt tofill up.

Therefore, another object of the invention is to construct a blower pipeassembly from which the elbow, which sometimes becomes clogged, can beeasily and quickly removed for cleaning or inspection withoutdismantling the blower pipe proper or the parts between the blower andthe elbow.

The invention is illustrated in the accompanying drawings, whereinFigure l is a side elevation showing a husker shredder of a conventionalconstruction equipped with a blower pipe and derrick constructed inaccordance with this invention.

Figure 2 is a side elevation showing the blower pipe swung into positionto extend horizontally over the husker shredder and the dotted linesindicating the position of the lowered derrick.

Figure 3 is a perspective view of the blower pipe and derrick, thedotted lines indicating the manner in which the elbow is removed whennecessary.

Figure 4 is an enlarged fragmentary sectional view illustrating themanner in which the derrick and blower pipe are mounted to rotate aboutthe delivery pipe of the machine, the view being taken along the line 44of Figure 5.

Figure 5 is a sectional view upon an enlarged scale taken along the line5-5 of Figure 3.

Figure 6 is a fragmentary view taken along the line 6-45 of Figure 1.

The blower pipe may be of any length desired and while it has beenillustrated as a single tube, it will be understood that it may consistof telescoping sections. The inner end of the blower pipe is connectedwith the delivery pipe 3 of the blower by an elbow 5 which consists of aplurality of sections 6 which telescope one into another and arepivotally mounted with respect to each other so that the blower pipe 4may be moved from a substantially horizontal position, as shown in fulllines in Figures 1, 2 and 3, to the vertical position indicated bydotted lines in Figure 1. The forward section of the elbow fits into therear end of the blower pipe and the rear section of the elbow fits aboutthe upper end of the delivery pipe 3, as shown in Figure 4, where itrests upon a collar 1. This collar may be formed of channel metal and isfirmly secured about the delivery pipe by rivets 8 with the flanges ofthe collar or ring projecting outwardly from the delivery pipe. The ringor collar is disposed in spaced relation to the upper end of thedelivery neck in order that the projecting upper end portion of thedelivery pipe may have telescoping fit within the rear section of theelbow and in order to provide a good bearing for the elbow, its rearsection carries a ring or collar 9 which is also formed of angle metaland has flat contacting engagement with the upper face of the ring I. Itwill thus be seen that the elbow will have its rear section reinforcedand it will be firmly sup- 0 ported about the upper end of the deliverypipe 3 and may turn easily about this pipe.

, A yoke, indicated in general by the numeral [0, fits about the ringcollar 1 which may be referred to as an annular track surrounding thedelivery pipe and upon referring to Figures 4 and 5 it will be seen thatthis yoke consists of companion sections ll, each of which is formedfrom a strip of channel metal having its flanges facing inwardly and insuch spaced relation to each other that when the yoke is in place theflanges of the sections 4 I will fit snugly between the outstandingflanges of the ring or track 7. The end portions of the strips ofchannel metal from which the sections H are formed are bent to providearms i2 and it which extend somewhat radially from the ring or track 7and through these arms are passed bolts l4 carrying spacing sleeves I5which limit movement of the companion arms toward each other. Therefore,the bolts may be tight ened to firmly bind the arms against the ends ofthe spacing sleeves and. the arcuate portions of the arms will be heldin their proper positions about the ring or track 1. g The bolt Mholding the yoke ends l2 together can be loosened and then, withoutloosening the bolts in the yoke ends I3, the channel metal yoke willspring open at its curvature and it will be possible to rotate the yokeand the entire blower pipe assembly to a desired position. After suchadjustment has been effected, the nut H! of the bolt M in the yoke endsit which is in the form of a hand wheel can be tightened to hold theassembly tightly clamped with the pipe extending in the desireddirection. Therefore, the yoke will be mounted for turning movementabout the track and may be turned in this track for an entire circleabout the delivery pipe. Retainers is, which are in the form of hooksformed from flat strips of metal, have their shanks formed with openingsthrough which bolts ll, carried by the arcuate portions of the yoke,pass. These hooks are to extend ver tically with their bills projectinginwardly to overlie diametrically opposed portions of the bearing ring 9of the elbow and when the wing nuts of the bolts ll are tightened, thehooks will be retained in overlying engagement with the ring 9 andprevent the rear section of the elbow from slipping upwardly out ofengagement with the delivery pipe of the blower. The yoke and the elbowmay both turn about the delivery pipe of the blower and, therefore, theblower pipe may be positioned to extend longitudinally away from themachine, as shown in Figure 1, transversely thereof or over the machine,as shown in Figure 2, the

blower pipe being in the position shown in Figure 2 when the machine isnot in use.

A derrick is employed in order to support the blower pipe and cause itto assume a desired angle when in use. This derrick, which is indicatedin general by the numeral I8, has side bars l9 which are formed ofchannel metal, as shown in Figure 3, and have their upper ends connectedby a bolt 2t which also serves to secure a plate or hanger 2!. Thisplate 2| projects at an in- ?5 cline from the upper ends of the sidebars 8 and is formed with an opening through which engages the hook of apulley 22 forming part of a block and tackle, the other pulley 23 ofwhich has its hook engaged through the eye 24 of a collar 25 securedabout the blower pipe in spaced relation to the inner end thereof. Theside bars of the derrick diverge downwardly and are retained in thedesired diverging relation to each other by a transversely extendingbrace 26 which is arcuate, as shown clearly in Figure 1, so that whenthe blower pipe is moved to a vertical position, the brace will not bein the way and interfere with movement of the blower pipe to the desiredposition. This arcuate formation of the brace also permits the elbow tobe released from the delivery pipe or neck of the blower and then movedout of engagement with the blower pipe, as indicated by dotted lines inFigure 3 without disturbing the derrick of the blower pipe. Struts 21and bars 28 are secured to lower ends of the side bars I 8 of thederrick, the struts 2! extending downwardly in a vertical position withtheir lower ends secured to diametrically opposed portions of the yokeby bolts 29 and the bars 28 extending horizontally at opposite sides ofthe elbow and blower pipe and firmly secured to'rings or collars tilwhich fit about the rear or inner end portion of the blower pipe inspaced relation to each other longitudinally thereof. The bolts whichconnect the struts 27 and bars 28 with the side bars of the derrick alsoserve to secure bracing bars 3! which extend at a downward incline andhave their lower or rear ends engaged about a bolt 32 carried by theside arms 33 of a. u -shapedframe 34 which is disposed transversely ofthe arms 53 of the yoke and firmly secured by bolts 35. A drum 36 havingacrank handle Slis rotatably mounted between the arms of the frame 3%and one head of the drum is formed with ratchet teeth for engagement bya pawl 38 carried by a bolt 39 extending between the upper ends of thearms 33. By turning the drum, the cable 45 of the block and tackle maybe wound upon the drum and since the pawl will prevent retrograderotation of the drum until deliberately moved to a drum releasingposition, the blower pipe will be supported either in a vertical orhorizontal position or any angle between the vertical and horizontalpositions. The sleeve 4| through which the bolt 39 passes, carries anarm 42 to which is anchored the lower end of the bracing bar or strip 43leading to the upper end of the derrick where it is secured between theside bars H) by the bolt 26 and serves to retain the derrick in anupright position for use. By withdrawing the bolt 39, the brace 43 willbe released from the bracket 3 and the derrick may then be swungdownwardly to a lowered position in which it will rest upon the blowerpipe, as indicated by dotted lines in Figure 2. Therefore, when theblower pipe is disposed horizontally over the machine and the derrick isswung downwardly to a horizontal position in which it rests upon theblower pipe, the machine may be very easily moved from one place toanother without danger of the blower pipe or derrick striking tree limbsand other obstructions and also the machine may be stored in a barn orshed having a low roof. If the blower pipe should become choked when themachine is in use, it is merely necessary to release the hooks it sothat they may be swung about the bolts I? out of engagement with thering 9 and the elbow may then be first moved forwardly and upwardlyuntil its rear end is out of engagement with the upper end of thedelivery pipe or neck 3 and then drawn forwardly and downwardly todetach it from the rear end of the blower pipe, as indicated by dottedlines in Figure 3. After the elbow has been detached, a stick carrying ahook or having a nail driven through it to serve as a hook may be thrustthrough the blower pipe and moved back and forth through the pipe todislodge the choked material. If the elbow is choked instead of theblower pipe, the elbow can be very easily cleaned after it has beenremoved. With the elbow removed it is easy to reach down into thedelivery pipe 3 and dislodge any material that may have choked this partof the assembly. After the cleaning operation has been completed, theelbow will be replaced and the machine will be again ready for use.

It will thus be seen that by having the blower pipe and derrickconstructed and mounted as shown, the blower pipe may be swung in acomplete circle about the delivery pipe or neck of the blower and may beswung to vertically adjusted positions between a horizontal and avertical position.

It will also be seen that the elbow is easily and quickly removable fordislodging chokes or for purpose of inspection without dismantling theblower pipe proper and without changing the position of the blower pipe.

Having thus described the invention, what is claimed as new is:

1. In a machine of the character described, a blower having a deliverypipe extending upwardly therefrom, a collar secured about said deliverypipe in spaced relation to the upper end thereof and constituting anannular track, a blower pipe, a flexible elbow having one end detachablyengaged with the blower pipe and its other end fitting about the upperend portion of the delivery pipe and resting upon said collar, a yokeengaged with said collar and rotatable about the same, means carried bysaid yoke for holding said elbow in place about the delivery pipe, aderrick carried by said yoke, and means carried by said derrick forsupporting the blower pipe and retaining the blower pipe in an angularlyadjusted position.

' 2. In a machine of the character described, a blower having a deliverypipe extending upwardly therefrom, a collar about said delivery pipesecured thereto in spaced relation to the upper end thereof, a blowerpipe, a flexible elbow having one end telescoped into the inner end ofthe blower pipe and its other end fitting about the delivery pipe abovesaid collar, a reinforcing ring about said elbow resting upon saidcollar, a yoke secured about said collar and adapted to rotate entirelyabout the collar, fasteners carried by said yoke and engaging said ringto retain the elbow in place about the delivery pipe, a derrick carriedby said yoke and movable about the collar with the yoke, said derrickhaving its upper portion mounted for adjustment from a vertical positionto a reclining position, and means carried by said derrick forsupporting the blower pipe and retaining the blower pipe in an angularlyadjusted position.

3. In a machine of the character described, a blower having an upwardlyextending delivery pipe, a collar secured about the delivery pipe inspaced relation to the upper end thereof and formed with outstandingupper and lower flanges defining a track, a blower pipe, a flexibleelbow having its outer end telescoped into the inner end of the blowerpipe and its inner end fitting about the upper end of the delivery pipe,a reinforcing ring secured about the inner end of said elbow and restingupon the upper flange of said collar, a yoke having an annular portionfitting about the collar and engaged between the flanges thereof and anarm extending from the annular portion, bars rising from the annularportion at opposite sides thereof, arms extending from said bars andconnected with said blower pipe, a derrick carried by said bars, a framecarried by the arm of said yoke, braces for the bars and derrickconnected with said frame, a drum carried by said frame, and a block andtackle carried by said derrick and having a pulley connected with theblower pipe and its cable wound upon said drum.

4. In, a machine of the character described, a blower having a deliverypipe extending upwardly therefrom, a collar secured about the deliverypipe, a blower pipe, a flexible elbow having its outer end detachablyengaged with the inner end of the blower pipe and its inner enddetachably and rotatably engaged with the delivery pipe and resting uponsaid collar, a yoke rotatable about said collar, a derrick having alower portion carried by said yoke and an upper portion pivoted to thelower portion, arms extending from the lower portion of the derrick atopposite sides of the flexible elbow and connected with the blower pipe,a brace for supporting the upper portion of the derrick in a verticalposition detachably secured whereby the upper portion of the derrick maybe swung from a vertical position to a reclining position, and meanscarried by the derrick for supporting the blower pipe in an angularlyadjusted position between a horizontal and a vertical position.

5. In a machine of the character described, a blower having a deliverypipe extending therefrom, a blower pipe, a flexible elbow detachablyengaged with the blower pipe and rotatably engaged with the deliverypipe, an annular track secured about the delivery pipe, a yoke rotatablyengaged about said track and having an arm extending radially therefrom,a frame carried by said arm, a drum rotatably carried by said frame,bars carried by said yoke at opposite sides of said elbow, armsextending from said bars along opposite sides of the elbow and blowerpipe, rings carried by said arms and disposed about said blower pipe,braces extending from said bars and secured to said frame, a derrickrising from said bars and pivoted thereto, a brace for said derrickconnected with said frame and detachable therefrom, a collar securedabout said blower pipe, a pulley carried by the derrick, a pulleyconnected with the collar of the blower pipe, and a cable trained aboutthe pulleys and wound upon said drum for adjusting the angle of theblower pipe and supporting the blower pipe in an adjusted position.

6. In a machine of the character described, a blower having a deliverypipe, a blower pipe, and an elbow extending between the delivery pipeand blower pipe with its outer end telescoped into the blower pipe andits inner end rotatably engaged about the delivery pipe, said elbowconsisting of a plurality of sections fitting one within another andpivotally connected with each other, a collar secured about the rear endsection of the elbow, a collar secured about said delivery pipe andengaged under the rear end of the elbow and the collar carried therebyto rotatably support the elbow, a yoke movable about the collar of saiddelivery pipe, fasteners carried by =25 livery pipe supporting said yokeandmovable intoand out of position to engage the collar of the elbow anddetachably hold the elbow about the delivery pipe, and a support forsaid blower pipe carried by said yoke and straddling the elbow.

7. In a machine of the character described, a

blower having a delivery pipe, a collar secured about said delivery pipeand constituting an annular track, a blower pipe, a flexible elbowhaving one end detachably engaged with the blower pipe and its other endresting upon said collar about the adjacent end ofthe delivery pipe, ayoke rotatable about the collar, releasable means for holding said elbowin place upon the collar, a derrick connected with said yoke and movingtherewith, and means carried by said derrick for supporting the blowerpipe and retaining the blower pipe in an adjusted position.

8. In a machine of the character described, a

,20 blower having a delivery pipe, a blower pipe, a

end portion of said blower pipe pivoted to the lower section of saidderrick, and means carried by said derrick'for supporting the blowerpipe in a vertically adjustable position from the upper section of thederrick.

9. In a machine of the character described, a blower having a deliverypipe, a blower pipe, an elbow extending between the delivery pipe andblower pipe with one end detachably carried by and rotatable about thedelivery pipe, said elbow consisting of a plurality of telescopingsections pivoted to each other and tiltable transversely of thelongitudinal axis of the elbow, the section forming the outer end of theelbow being telescoped into the inner end of the blower pipe andfrictionally held therein and being slidable longitudinally into and outof engagement therewith, a yoke rotatable about said delivery pipe, aderrick straddling said elbow and having a lower portion carried by saidyoke and an upper section pivoted to the lower section for verticalswinging movement from a raised position to a reclining position, meansto secure the upper section upright, supporting means for the inner endportion of said blower pipe pivoted to the lower section of saidderrick, and means carried by said derrick for supporting the blowerpipe in a vertically adjusted position from the upper section of thederrick. i

THEODORE H. OPPENHEIM.

